Compact frequency spectrum detector

Abstract

In one aspect, a compact frequency spectrum detector includes one or more digital signal processing blocks configured to receive a digital signal and output information about at least one frequency component of the digital signal using a filter, wherein the at least one frequency component is specified by an index, wherein the one or more digital signal processing blocks are configured to calculate at least one constant based on the index by approximating a trigonometric function using a second order expansion of the trigonometric function, wherein the at least one constant is provided as input to the filter. In another aspect, a system includes an artificial intelligence (AI) agent and a plurality of sensors each having a compact frequency spectrum detector configured to compute information about at least one frequency component of a digital signal and transmit the computed information to the AI agent.

Dependencies are inferred from the claim text.